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Old 08-06-2009, 08:03 AM   #26
HeadlessNorseman
 
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Join Date: Aug 2007
Location: Long Branch NJ
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Quote:
Originally Posted by crainholio View Post
Just for ha-ha's, visualize a properly installed cam & crank gear with the chain attached. Zero dots are lined up facing each other perfectly.

Then rotate the crank one turn.

It's a 4-stroke engine, cam turns at half the speed of the crank. Next time the crank has #1 piston at TDC, the cam gear dot is "180 out" according to your belief system.

Historically all that "180 out" stuff happened when the shop chimp installed the distributor pointing to #1 plug tower, but the cam was on #6 firing. If it's possible to install the cam 180 out of phase on a distributorless LS1, I'd love to hear about it.

The car still runs its timing off of the crank and cam position. it doesnt just "guess" when to fire the spark plugs.
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